I wouldn't say she is 0% interested but it's definitely the weakest part of the story. It stall so much that any progress feel forced both on her and on the reader, like this whole thing just now.
lmao no wonder they only got introduced in the side chapter, they weren't even remotely worth being fodder.
Also, they assume she is stronger in berserk state, in raw power maybe in control probably not.
That's indeed a good question huh, she definitely went all out and used all spirit at once but still the outcome is insane when you think about the level of her opponents and how dangerous relics are.
Yeah I agree this is the 2 main ways it can go from here.
Hopefully it's 2nd one because first option is way too common and wouldn't add a lot (it's been year of him torturing himself already, no point in bothering helping him to make him despair again)
I'm not fond of how he had 7y to take it in and west let out but still react as if trauma was super recent (not that it's not realistic, not sure he had access to mental care in any form, JP jail is famously stuck in the past).
I think the reason behind that is probably similar for both series, both early danmachi and toaru have to build the world while the spinoff have the major advantage of working on established grounds. In both case the author also gained a lot of experience writing and it show.
Other AI definitely is very different, she boost Katsuya actively and passively on a subconscious level and seem to even make him emit a light brainwash/pheromone aura.